4689640 has 16 divisors (see below), whose sum is σ = 10551780. Its totient is φ = 1875840.

The previous prime is 4689611. The next prime is 4689661. The reversal of 4689640 is 469864.

It can be written as a sum of positive squares in 2 ways, for example, as 4235364 + 454276 = 2058^2 + 674^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4689640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58581 + ... + 58660.

Almost surely, 2^4689640 is an apocalyptic number.

4689640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4689640 is an abundant number, since it is smaller than the sum of its proper divisors (5862140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4689640 is a wasteful number, since it uses less digits than its factorization.

4689640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117252 (or 117248 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 4689640 is about 2165.5576648984. The cubic root of 4689640 is about 167.3837018505.

It can be divided in two parts, 4689 and 640, that added together give a square (5329 = 73²).

The spelling of 4689640 in words is "four million, six hundred eighty-nine thousand, six hundred forty".